Grill of an evaporative cooler



FIG. 1 is a front elevational view of a grill of an evaporative cooler showing my new design;

FIG. 2 is an enlarged fragmentary front elevational view thereof in the area indicated by “2” in FIG. 1;

FIG. 3 is a top, front, and right side perspective view thereof; and,

FIG. 4 is a right side elevational view thereof.

The broken-line disclosure of the remainder of the evaporative cooler in FIGS. 1, 3, and 4 are shown for illustrative purposes only and form no part of the claimed design. FIG. 2 is lined to indicate the gray or silver appearance of the grill. The broken-line between the unclaimed portions and the claimed area of the disclosure is intended to represent an unclaimed boundary. 

The ornamental design for a grill of an evaporative cooler, as shown and described. 